Wheel Specs

Car Wheel Specs

Wheel Specs: Bolt Pattern, Rims Width and Offsets, Tire Sizes

Trying to upgrade your ride or replace your rims with customized ones? Finding a perfect fit is strenuous. You have to make multiple measurements, conduct online searches and all that. Still, you are worried if you are getting the correct fit. We have a detailed database of aftermarket wheels to guide you in finding compatible wheels to match your preferences.

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Learn about the wheel specs for any car


Wheel specifications

Manufacturers recommend the appropriate wheel sizes, with specific dimensions. As a driver, you may want to buy slightly modified wheels. Here are some of the specifications that you must have in mind.

Wheel diameter

This is quantified in inches and is indicated at the rear side of the wheel. Wheel diameter is measured as the distance on the side of the wheel along the bead edges. When replacing the wheel, use an aftermarket wheel with the same wheel diameter. Car wheel diameters range from 13” to 24”.

Wheel width

The size of the wheel width affects traction and braking as it determines the size of the tire’s contact patch with the road. Wheels with narrower widths have smaller contact patches. The width of any wheel is measured in inches and is the lateral distance between bead seats. Wheels with a narrower wheel width are difficult to handle.

Wheel offset

You wouldn’t like driving on a wheel that scratches against your vehicle’s body. When selecting an aftermarket wheel, remember to select one with the correct offset. That is the distance between the wheel’s mounting and the centerline of the wheel.

Bolt patterns

Every wheel has a specific number of lugs spaced equally. The positioning and spacing create a unique pattern. When going for the aftermarket wheels, select the correct wheel pattern.

You can always refer to our wheel specifications directory for guidance. We do not stock any wheels but provide valuable reviews on aftermarket wheel alternatives.

Important things to note:

The wheel size is the size designation of a wheel given by its diameter, width, and offset.

The diameter of the wheel is the diameter of the cylindrical surface on which the tire bead rides. The width is the inside distance between the bead seat faces. The offset is the distance from the wheel's true centerline (half the width) to the wheel's mounting surface. Offset is covered in more detail below.

A typical wheel size will be listed beginning with the diameter, then the width, and lastly the offset (+ or - for positive or negative). Although wheel sizes are marketed with measurements in inches, the Michelin TRX introduced in 1975 was marketed in millimeters.